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Question for digital design project

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Arwen148

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Hi, I am designing a circuit to perform Viginere encryption and I have a problem on how to provide the entrances to the circuit. I have to use a keyboard that transforms alpharithmetics to ASCII codes but the one design that I found is too large and too old. Does anyone have an idea on what to do???:|
 

the_risk_master

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What algo or codes does a Vignene Encryption do? How many bits it used? and can you show your old design? May be we could help

(I'm very sorry for I don't know the algo of such encryption, perhaps just show some algo)
 

Arwen148

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To understand Viginere encryption check out the following site:
http://www.trincoll.edu/depts/cpsc/cryptography/vigenere.html

since i will only be using it to encrypt letters it will need 7 bits for the ASCII code of each letter. I use d flip-flops to hold the key-word and then with a MUX deside which letter of the key should be used at each cycle. The problem is that the design for the keyboard ASCII-binary (and for the encoder)is too complicated to be a part only of a project and i was wondering whether there is another solution to use.
 

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